Page 8 - YINGMING POWER(HIGH VOLTAGE)

YINGMING POWER

ZW32-12MF

OUTDOOR HIGH VOLTAGE PERMANENT
MAGNET VACUUM CIRCUIT BREAKER

Overview
When a fault occurs inside the T-connected branch line of the 12kV overhead distribution line or at the end user, the time limit of the protection action
of the incoming switch and the protection time limit of the outgoing switch of the substation cannot be adjusted properly, which will cause the outgoing
switch of the substation to trip. If the nature of the fault is permanent and the substation coincidence will be unsuccessful, a local fault in the medium-
voltage user community will cause the entire 12kV distribution line to be powered off. If an outdoor boundary circuit breaker is installed at the T junction
or the user terminal (responsibility boundary point), if a failure (overcurrent, short circuit, single-phase grounding, etc.) occurs within the user boundary
after judgment, the failure is automatically isolated, you can ensure Users in the non-fault area normally use electricity. The application of ZW32-12MF
outdoor high voltage permanent magnet vacuum circuit breaker on the 12kV feeder overhead line can avoid the unintended power outage of the fault-
free line, reduce the fault outage range, shorten the user outage time and protect the safe operation of the main network. It also has a fault detection
function, protection control function and communication function, which can automatically cut off single-phase ground faults and automatically isolate
short-circuit faults between phases. The installation point is applicable to the junction point of the responsibility of the 12kV distribution line user
incoming line, and can also be applied to the branch line connection that meets the requirements.

Model meaning
Z W 32 - 12 M F G / □-□
Rated short-circuit breaking current (kA)
Rated current (A)
With isolation switch
Boundary switch
Permanent magnet switch
Rated voltage (kV)
Product design serial number
outdoor
Vacuum circuit breaker

Environmental conditions

◆ Ambient temperature: not higher than + 40 ℃ , not lower than -40 ℃ ;
◆ Relative humidity of air: daily average value is not greater than 95%, monthly average value is not greater than 90%;
◆ Altitude does not exceed 2000 meters;
◆ Wind pressure does not exceed 700Pa (equivalent to wind speed 34m / s);
◆ The seismic intensity does not exceed 8;
◆ No fire, explosion, severe pollution, chemical corrosion and violent vibration.

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